package com.ilongchat.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
@Component
public class SpringUtil implements ApplicationContextAware {
	private static ApplicationContext applicationContext = null;

	@Override
	    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

	       if(SpringUtil.applicationContext == null){

	           SpringUtil.applicationContext  = applicationContext;

	       }

	     

	    }

	// 获取applicationContext

	public static ApplicationContext getApplicationContext() {
	       return applicationContext;

	    }

	// 通过name获取 Bean.

	public static Object getBean(String name) {

		return getApplicationContext().getBean(name);

	}

	// 通过class获取Bean.

	public static <T> T getBean(Class<T> clazz) {

		return getApplicationContext().getBean(clazz);

	}

	// 通过name,以及Clazz返回指定的Bean

	public static <T> T getBean(String name, Class<T> clazz) {

		return getApplicationContext().getBean(name, clazz);

	}
}
